3fach Joystickadapter - Hardware



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Hardware - 3fach Joystickadapter
Name:	3fach Joystickadapter
Category:	Cable
Introduced:	1994
Manufactured by	Solder

3-way joystick adapter from Synergy. Only supported by Tron 6: two joysticks on the regular ports, a third joystick via Solder's SID Card, and joysticks 4 5 and 6 connected with the 3fach Joystickadapter.

This adapter allows you to connect 3 C64 compatible joysticks to the user port of the plus/4.

Programming:
The joystick port can be read using user port ($FD10) operations. Mapping of the port:
- bit 0: up
- bit 1: down
- bit 2: left
- bit 3: right
- bit 4: fire
- bit 5: select joystick port 4
- bit 6: select joystick port 5
- bit 7: select joystick port 6
Reading a joystick port: set the bit of the selected joystick port select to 0 and all others to 1 at $fd10 then read out the value. Example:


LDA #%01111111
STA $FD10
LDA $FD10

will read the state of joystick in port 6.